A hydraulic shaping machine for mining cars

Abstract

The present invention relates to the technical field of hydraulic shaping machines, and discloses a hydraulic shaping machine for mine cars, including a clamp, a positioning block is installed at the bottom of the clamp, the positioning block and the clamp are connected by a lifting assembly, a shaping groove is opened in the middle of one side of the positioning block, a cylinder is fixedly connected to the side of the positioning block away from the shaping groove, a shaping plate is fixedly connected to the output end of the cylinder, the shaping plate is slidably connected to the shaping groove, mobile grooves are opened on both sides of the positioning block, a permanent magnet block is slidably connected in each mobile groove, and a mobile assembly for providing a mobile function to the permanent magnet block is connected in each mobile groove. This hydraulic shaping machine for mine cars realizes the shaping and repairing work of the mine car through the mutual cooperation of the shaping plate and the permanent magnet block. Compared with the existing hydraulic shaping machine, the present invention can realize the rapid processing of the deformation of the bottom of the mine car and provides a full range of repair capabilities.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic shaping machines, in particular to a hydraulic shaping machine used for a mine car. Background Art

[0002] In harsh working environments, mine cars may be hit or worn, resulting in deformation of the car body, problems with the alignment of wheels and tracks, etc., which not only affect their normal operation, but may also increase maintenance costs and reduce work efficiency. At present, hydraulic shaping machines are used to shape and repair mine cars. The shaping fixtures on the hydraulic shaping machines are used to squeeze the deformed parts of the mine car to keep the outer wall of the mine car flat.

[0003] As in the prior art, the invention patent with the authorization announcement number CN114643299B discloses a hydraulic shaping machine modification and repair device for mine cars, including a shaping mechanism and a connecting mechanism, the shaping mechanism includes a support arm, a connecting arm and a shaping fixture, the connecting arm is arranged at the top of the support arm and a slider is arranged inside, one end of the connecting arm is provided with a hydraulic rod 1 for driving the slider to move in the X-axis direction, and the top of the slider is provided with a hydraulic rod 2 for driving the shaping fixture to move in the Z-axis direction. By setting up a shaping mechanism and a connecting mechanism, compared with conventional manual leveling by workers, the above device repairs and levels the mine car through the shaping mechanism, effectively reducing the labor intensity of workers, while ensuring the repair and leveling efficiency, the shaping mechanism has a simple manufacturing process, and the support arm, connecting arm and shaping fixture are made of the remaining steel in the workshop, which is conducive to on-site construction, meets economic benefits, and has broad application prospects.

[0004] Although the hydraulic shaping machine in the above patent realizes timely repair of the mine car, the existing hydraulic shaping machine has certain defects when in use; when the existing hydraulic shaping machine repairs the mine car, because the shaping fixture is U-shaped and the size of the shaping fixture is fixed, the hydraulic shaping machine can only perform shaping and repair work on the upper part of the mine car, and it is difficult to perform shaping and repair on the deformation of the side wall of the bottom of the mine car, resulting in low repair efficiency of the mine car, affecting the use effect and service life of the mine car. Summary of the invention

[0005] In view of the deficiencies of the prior art, the present invention provides a hydraulic shaping machine for a mine car to solve the problems raised by the background technology and increase the repair capability of the bottom side wall of the mine car.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a hydraulic shaping machine for a mine car, comprising a clamp, a positioning block is installed at the bottom of the clamp, the positioning block and the clamp are connected by a lifting assembly, a shaping groove is provided in the middle of one side of the positioning block, a cylinder is fixedly connected to the side of the positioning block away from the shaping groove, a shaping plate is fixedly connected to the output end of the cylinder, the shaping plate is slidably connected to the shaping groove, movable grooves are provided on both sides of the positioning block, a permanent magnet block is slidably connected in each of the movable grooves, and a movable assembly for providing a moving function to the permanent magnet block is connected in each of the movable grooves.

[0007] Furthermore, the moving component includes a connecting block, a moving block, a metal spring and a pressure spring. The permanent magnet block is slidably connected to a connecting block on one side close to the shaping groove. A sliding groove is provided in the middle of the connecting block on the side close to the shaping groove. The moving block is slidably connected in the sliding groove. The side of the moving block close to the cylinder is an inclined surface. The inner wall of the shaping groove is provided with a sliding groove corresponding to the position of the moving block. The inner wall of the sliding groove on the side close to the cylinder is an inclined surface. The moving block corresponds to the position of the shaping plate. A metal spring is fixedly connected in the sliding groove. One side of the metal spring is fixedly connected to the moving block. Two pressure springs are fixedly connected to the side of the permanent magnet block close to the cylinder. The other end of the pressure spring is fixedly connected to the inner wall of the moving groove.

[0008] Furthermore, the lifting assembly includes a fixing buckle, a fixing block, an electric push rod and an output shaft. A fixing buckle is fixedly connected to the middle of one side of the clamp, and fixed blocks are fixedly connected to the bottom of both sides of the clamp. An electric push rod is fixedly connected inside the fixing buckle, and an output shaft is fixedly connected to the output end of the electric push rod. The output shaft is slidably connected to one of the fixed blocks, and the bottom end of the output shaft is fixedly connected to one side of the surface of the positioning block.

[0009] Furthermore, a sliding rod is fixedly connected to a side of the surface of the positioning block away from the output shaft, and the sliding rod is slidably connected to the fixed block away from the electric push rod.

[0010] Furthermore, a buffer pad is fixedly connected to a side of the movable groove away from the cylinder, and the buffer pad corresponds to the position of the permanent magnet block.

[0011] Furthermore, two symmetrically arranged protective pads are fixedly connected to a side of the positioning block away from the cylinder.

[0012] Furthermore, the bottom surface of the positioning block is provided with two clamping grooves corresponding to the positions of the two permanent magnet blocks respectively, a cover plate is slidably connected in the clamping groove, a screw is rotatably connected to the bottom surface of the cover plate, and the screw is threadedly connected to the inner wall of the clamping groove.

[0013] Furthermore, a baffle is fixedly connected to one side of the permanent magnet block close to the cylinder, and the baffle matches the shape and position of the sliding groove. A shielding belt is fixedly connected to one side of the moving block away from the cylinder, and the other end of the shielding belt is fixedly connected to the side of the sliding groove away from the cylinder.

[0014] Furthermore, both sides of the inner wall of the slide groove are fixedly connected with limit blocks, and both sides of the moving block are provided with limit grooves corresponding to the positions of the two limit blocks respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] (1) This hydraulic shaping machine for mine cars realizes the shaping and repairing of mine cars through the cooperation between the shaping plate and the permanent magnet block. Compared with the existing hydraulic shaping machine, the present invention can realize the rapid processing of the deformation of the bottom of the mine car and provide a full range of repair capabilities;

[0017] (2) The cooperation between the moving block, the metal spring and the pressure spring is used to move the permanent magnet block, thereby facilitating the separation of the positioning block from the mine car, so as to facilitate the next shaping and repair work;

[0018] (3) The electric push rod and the output shaft can be used to lift the positioning block, so that the shaping plate can be used to shape and repair the mine cars with deformations at different positions and at different heights, thereby improving the application range of the entire shaping device, increasing the overall flexibility and adaptability of the hydraulic shaping machine, and improving the efficiency and quality of the repair work;

[0019] (4) The buffer pad can absorb the kinetic energy of the permanent magnet block and convert the impact force into heat energy dissipation through its own elastic deformation, thereby significantly reducing the hard collision between the permanent magnet block and the inner wall of the moving groove, preventing the permanent magnet block from being damaged, improving the overall reliability of the hydraulic shaping machine, reducing the maintenance frequency and cost of the equipment, and ensuring the continuous and efficient operation of the equipment;

[0020] (5) By using the cooperation between the baffle and the shielding belt, the sliding groove can be closed during the movement of the moving block, ensuring that the moving groove is separated from the outside world and preventing rust and the like from entering the moving groove from the sliding groove to hinder the movement and use of the permanent magnet block. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the clamp, positioning block, cylinder and electric push rod of the present invention;

[0023] Figure 3 It is a three-dimensional structural schematic diagram of the positioning block, the electric push rod, the shaping plate and the sliding rod of the present invention;

[0024] Figure 4 It is a schematic diagram of the three-dimensional cross-sectional structure of the positioning block, the permanent magnet block and the pressure spring of the present invention;

[0025] Figure 5 It is a schematic diagram of the three-dimensional split cross-sectional structure of the positioning block, the permanent magnet block and the moving assembly of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional cross-sectional structure of the positioning block and the buffer pad of the present invention;

[0027] Figure 7 It is a schematic diagram of the three-dimensional structure of the permanent magnet block, baffle and moving assembly of the present invention;

[0028] Figure 8 It is a schematic diagram of the three-dimensional cross-sectional structure of the permanent magnet block, baffle and moving assembly of the present invention;

[0029] Fig. 9 It is a schematic diagram of the three-dimensional cross-sectional structure of the permanent magnet block, the connecting block and the limiting block of the present invention;

[0030] Fig.10 It is a schematic diagram of the three-dimensional structure of the metal spring piece, the moving block and the shielding belt of the present invention;

[0031] Fig.11 It is a three-dimensional structural schematic diagram of the clamp, lifting assembly and sliding rod of the present invention;

[0032] Fig.12 It is a schematic diagram of the three-dimensional split structure of the lifting assembly of the present invention.

[0033] In the figure: 1. clamp; 2. positioning block; 3. shaping groove; 4. cylinder; 5. shaping plate; 6. permanent magnet block; 7. moving groove; 8. connecting block; 9. sliding groove; 10. moving block; 11. metal spring; 12. pressure spring; 13. baffle; 14. shielding belt; 15. limit block; 16. limit groove; 17. sliding groove; 18. buffer pad; 19. protective pad; 20. snap-on groove; 21. cover plate; 22. screw; 23. fixing buckle; 24. fixing block; 25. electric push rod; 26. output shaft; 27. sliding rod. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0035] See also Figures 1 to 12A hydraulic shaping machine for a mine car comprises a fixture 1, a positioning block 2 is installed at the bottom of the fixture 1, the positioning block 2 and the fixture 1 are connected by a lifting assembly, a shaping groove 3 is opened in the middle of one side of the positioning block 2, a cylinder 4 is fixedly connected to the side of the positioning block 2 away from the shaping groove 3, a shaping plate 5 is fixedly connected to the output end of the cylinder 4, the shaping plate 5 is slidably connected to the shaping groove 3, moving grooves 7 are opened on both sides of the positioning block 2, a permanent magnet block 6 is slidably connected in each moving groove 7, and a moving assembly for providing a moving function to the permanent magnet block 6 is connected in each moving groove 7.

[0036] The hydraulic shaping machine for a mine car in the present invention can shape and repair the upper side wall of the mine car through the clamp 1 and the hydraulic device on the clamp 1 when shaping the mine car; when shaping and repairing the lower side wall of the mine car, the staff first judges the deformation of the side wall. When the deformation is convex, the positioning block 2 is placed on the outside of the mine car, and then the position of the positioning block 2 is adjusted by the lifting assembly so that the shaping groove 3 is aligned with the deformation position. Then, under the adsorption of the permanent magnet block 6, the positioning block 2 is adsorbed together with the side wall of the mine car, and then the cylinder 4 is started to push the shaping plate 5 to move along the shaping groove 3. As the shaping plate 5 moves, it will gradually contact the outward convex deformation. , under the thrust of the cylinder 4, the deformation is flattened, thereby realizing the reshaping and repair of the outer wall of the mine car; when the deformation is concave, the positioning block 2 is placed on the inside of the mine car, and the deformation is squeezed from the inside to realize the repair of the mine car; the permanent magnet block 6 adopts high-strength permanent magnet material, such as neodymium iron boron magnet, etc. This type of magnet has a very high magnetic density, which can ensure that when the cylinder 4 pushes the shaping plate 5 for reshaping and repair, the positioning block 2 will not move; through the mutual cooperation of the shaping plate 5 and the permanent magnet block 6, the reshaping and repair work of the mine car is realized. Compared with the existing hydraulic shaping machine, the present invention can realize the rapid processing of the deformation of the bottom of the mine car and provide a full range of repair capabilities.

[0037] As a preferred technical solution of the present invention, the moving component includes a connecting block 8, a moving block 10, a metal spring 11 and a pressure spring 12. The permanent magnet block 6 is slidably connected to the connecting block 8 on the side close to the shaping groove 3. A sliding groove 9 is provided in the middle of the connecting block 8 on the side close to the shaping groove 3. The moving block 10 is slidably connected in the sliding groove 9. The side of the moving block 10 close to the cylinder 4 is an inclined surface. A sliding groove 17 corresponding to the position of the moving block 10 is provided on the inner wall of the shaping groove 3. The inner wall of the sliding groove 17 on the side close to the cylinder 4 is an inclined surface. The moving block 10 corresponds to the position of the shaping plate 5. A metal spring 11 is fixedly connected in the sliding groove 9. One side of the metal spring 11 is fixedly connected to the moving block 10. Two pressure springs 12 are fixedly connected to the side of the permanent magnet block 6 close to the cylinder 4. The other end of the pressure spring 12 is fixedly connected to the inner wall of the moving groove 7.

[0038] Specifically, when the cylinder 4 pushes the shaping plate 5 to gradually fit the side wall of the mine car for shaping and repair, the shaping plate 5 will squeeze the inclined surface of the moving block 10, so that the moving block 10 will retract into the sliding groove 17, and then the shaping plate 5 will pass over the moving block 10, and the moving block 10 will move out of the sliding groove 17 under the squeezing of the metal spring 11. At this time, the shaping plate 5 is in contact with the side of the moving block 10 away from the inclined surface; after the shaping is completed, the cylinder 4 pulls the shaping plate 5 to move, and at this time the shaping plate 5 will apply pressure to the moving block 10. When the pulling force of the cylinder 4 is greater than the suction force of the permanent magnet block 6, the shaping plate 5 will drive the moving block 10 to move, and then drive the permanent magnet block 6 to move, so that the distance between the permanent magnet block 6 and the side wall of the mine car increases, and the distance between the two increases. The magnetic attraction effect between the two decreases, and the positioning block 2 loses its fixation with the mine car, so that the positioning block 2 can be moved, thereby repairing other deformed parts. As the cylinder 4 pulls the shaping plate 5 to move, the inclined surface of the moving block 10 will fit with the inclined surface of the sliding groove 17. Under the action of the inclined surface, the moving block 10 will retract into the sliding groove 17, thereby separating the moving block 10 from the shaping plate 5. Under the action of the pressure spring 12, the permanent magnet block 6 moves and resets along the moving groove 7, and the magnetic attraction effect is restored; the moving block 10, the metal spring 11 and the pressure spring 12 cooperate with each other to realize the movement of the permanent magnet block 6, thereby facilitating the separation between the positioning block 2 and the mine car, so as to facilitate the next shaping and repair work.

[0039] As a preferred technical solution of the present invention, the lifting assembly includes a fixing buckle 23, a fixing block 24, an electric push rod 25 and an output shaft 26. The fixing buckle 23 is fixedly connected to the middle of one side of the clamp 1, and the fixing blocks 24 are fixedly connected to the bottom of both sides of the clamp 1. The electric push rod 25 is fixedly connected inside the fixing buckle 23, and the output end of the electric push rod 25 is fixedly connected to the output shaft 26. The output shaft 26 is slidably connected to one of the fixed blocks 24, and the bottom end of the output shaft 26 is fixedly connected to one side of the surface of the positioning block 2.

[0040] Specifically, by utilizing the cooperation between the electric push rod 25 and the output shaft 26, the positioning block 2 can be raised and lowered, thereby facilitating the shaping plate 5 to shape and repair mine cars with deformations at different positions and at different heights, thereby improving the applicability of the entire shaping device, increasing the overall flexibility and adaptability of the hydraulic shaping machine, and improving the efficiency and quality of the repair work.

[0041] As a preferred technical solution of the present invention, a sliding rod 27 is fixedly connected to a side of the surface of the positioning block 2 away from the output shaft 26 , and the sliding rod 27 is slidably connected to the fixed block 24 away from the electric push rod 25 .

[0042] Specifically, the slide bar 27 can assist the positioning block 2 in moving stably, thereby ensuring the straightness and stability of the positioning block 2 during the lifting process.

[0043] As a preferred technical solution of the present invention, a buffer pad 18 is fixedly connected to a side of the movable groove 7 away from the cylinder 4 , and the buffer pad 18 corresponds to the position of the permanent magnet block 6 .

[0044] Specifically, the buffer pad 18 is a material with high elasticity, wear resistance and impact resistance, such as high-performance rubber, polyurethane or other elastomeric materials; when the permanent magnet block 6 moves, under the action of strong magnetic force, the permanent magnet block 6 moves at a faster speed, and is easy to collide with the inner wall of the moving groove 7 to cause breakage and fragmentation. The buffer pad 18 can absorb the kinetic energy of the permanent magnet block 6, absorb the impact force through its own elastic deformation, convert the kinetic energy into elastic potential energy, and then slowly release it. At the same time, the elastic material of the buffer pad 18 will cause friction and collision between its molecules during the deformation and recovery process. This causes part of the energy to be dissipated in the form of heat energy, thereby gradually converting the total energy into heat energy and dissipating it to the outside world. This energy absorption and release process can significantly reduce the amplitude and duration of the impact, thereby achieving a buffering effect. As the buffer pad 18 continuously converts energy into heat energy, the permanent magnet block 6 can eventually be stopped. The buffer pad 18 can significantly reduce the hard collision between the permanent magnet block 6 and the inner wall of the movable groove 7, preventing the permanent magnet block 6 from being damaged, thereby improving the overall reliability of the hydraulic shaping machine, reducing the maintenance frequency and cost of the equipment, and ensuring the continuous and efficient operation of the equipment.

[0045] As a preferred technical solution of the present invention, two symmetrically arranged protective pads 19 are fixedly connected to the side of the positioning block 2 away from the cylinder 4 .

[0046] Specifically, the protective pad 19 is installed on the side of the positioning block 2 away from the cylinder 4. Its main function is to protect the side wall of the mine car from damage and reduce the impact or wear that the positioning block 2 may encounter during use. At the same time, the protective pad 19 can isolate the rust on the surface of the mine car to prevent the rust from wearing the positioning block 2. After long-term use, the protective pad 19 can be torn off and a new protective pad 19 can be pasted on it using glue, adhesive stickers, etc. to achieve replacement.

[0047] As a preferred technical solution of the present invention, two snap-in grooves 20 corresponding to the positions of the two permanent magnet blocks 6 are provided on the bottom surface of the positioning block 2, a cover plate 21 is slidably connected in the snap-in groove 20, a screw 22 is rotatably connected to the bottom surface of the cover plate 21, and the screw 22 is threadedly connected to the inner wall of the snap-in groove 20.

[0048] Specifically, after long-term use, the magnetism of the permanent magnet block 6 will decrease. At this time, the screw 22 can be unscrewed, the cover 21 can be opened, and then the permanent magnet block 6 can be separated from the connecting block 8. Then, the new permanent magnet block 6 can be inserted into the movable groove 7 and slidably connected with the connecting block 8 to achieve the replacement of the permanent magnet block 6. Then, the cover 21 can be closed, the screw 22 can be screwed on, and the device can continue to be used for hydraulic shaping work.

[0049] As a preferred technical solution of the present invention, a baffle 13 is fixedly connected to the side of the permanent magnet block 6 close to the cylinder 4, and the baffle 13 matches the shape and position of the sliding groove 17. A shielding belt 14 is fixedly connected to the side of the moving block 10 away from the cylinder 4, and the other end of the shielding belt 14 is fixedly connected to the side of the sliding groove 17 away from the cylinder 4.

[0050] Specifically, the shielding belt 14 is designed as a folding belt, which can be extended and tilted. By utilizing the cooperation between the baffle 13 and the shielding belt 14, the sliding groove 17 can be closed during the movement of the moving block 10, ensuring that the moving groove 7 is separated from the outside world and preventing rust and the like from entering the moving groove 7 from the sliding groove 17 and hindering the movement and use of the permanent magnet block 6.

[0051] As a preferred technical solution of the present invention, both sides of the inner wall of the slide groove 9 are fixedly connected to the limiting blocks 15, and both sides of the moving block 10 are provided with limiting grooves 16 corresponding to the positions of the two limiting blocks 15 respectively.

[0052] Specifically, by utilizing the cooperation between the limit block 15 and the limit groove 16, the stability and accuracy of the moving block 10 during movement can be improved, preventing it from unnecessary displacement or shaking when subjected to external force, thereby improving the working efficiency and repair accuracy of the entire hydraulic shaping machine.

[0053] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A hydraulic shaping machine for a mine car, comprising a clamp (1), characterized in that: A positioning block (2) is installed at the bottom of the clamp (1), and the positioning block (2) is connected to the clamp (1) via a lifting assembly. A shaping groove (3) is provided in the middle of one side of the positioning block (2), and a cylinder (4) is fixedly connected to the side of the positioning block (2) away from the shaping groove (3). A shaping plate (5) is fixedly connected to the output end of the cylinder (4), and the shaping plate (5) is slidably connected to the shaping groove (3). Both sides of the positioning block (2) are provided with moving grooves (7), and each of the moving grooves is (7) are slidably connected with a permanent magnet block (6), and each of the movable grooves (7) is connected with a movable component for providing a movable function to the permanent magnet block (6); the movable component comprises a connecting block (8), a movable block (10), a metal spring (11) and a pressure spring (12), and the permanent magnet block (6) is slidably connected with a connecting block (8) on one side close to the shaping groove (3), and a sliding groove (9) is provided in the middle of the connecting block (8) on the side close to the shaping groove (3), and a sliding groove (9) is slidably connected with The movable block (10) has a side of the movable block (10) close to the cylinder (4) as an inclined surface, the inner wall of the shaping groove (3) is provided with a sliding groove (17) corresponding to the position of the movable block (10), the inner wall of the sliding groove (17) close to the cylinder (4) is an inclined surface, the movable block (10) corresponds to the position of the shaping plate (5), a metal spring (11) is fixedly connected in the sliding groove (9), one side of the metal spring (11) is fixedly connected to the movable block (10), and the permanent magnet block (6) is close to the cylinder (4). Two pressure springs (12) are fixedly connected to one side of the cylinder (4), and the other end of the pressure spring (12) is fixedly connected to the inner wall of the movable groove (7); a baffle (13) is fixedly connected to the side of the permanent magnet block (6) close to the cylinder (4), and the baffle (13) matches the shape and position of the sliding groove (17); a shielding belt (14) is fixedly connected to the side of the movable block (10) away from the cylinder (4), and the other end of the shielding belt (14) is fixedly connected to the side of the sliding groove (17) away from the cylinder (4).

2. A hydraulic shaping machine for a mine car according to claim 1, characterized in that: The lifting assembly comprises a fixing buckle (23), a fixing block (24), an electric push rod (25) and an output shaft (26); the fixing buckle (23) is fixedly connected to the middle of one side of the clamp (1); the fixing blocks (24) are fixedly connected to the bottoms of both sides of the clamp (1); the electric push rod (25) is fixedly connected inside the fixing buckle (23); the output end of the electric push rod (25) is fixedly connected to the output shaft (26); the output shaft (26) is slidably connected to one of the fixing blocks (24); and the bottom end of the output shaft (26) is fixedly connected to one side of the surface of the positioning block (2).

3. A hydraulic shaping machine for a mine car according to claim 2, characterized in that: A sliding rod (27) is fixedly connected to a side of the surface of the positioning block (2) away from the output shaft (26), and the sliding rod (27) is slidably connected to a fixed block (24) away from the electric push rod (25).

4. A hydraulic shaping machine for a mine car according to claim 1, characterized in that: A buffer pad (18) is fixedly connected to a side of the movable groove (7) away from the cylinder (4), and the buffer pad (18) corresponds to the position of the permanent magnet block (6).

5. The hydraulic shaping machine for a mine car according to claim 1, characterized in that: Two symmetrically arranged protective pads (19) are fixedly connected to the side of the positioning block (2) away from the cylinder (4).

6. A hydraulic shaping machine for a mine car according to claim 1, characterized in that: The bottom surface of the positioning block (2) is provided with two clamping grooves (20) corresponding to the positions of the two permanent magnet blocks (6) respectively, a cover plate (21) is slidably connected in the clamping groove (20), a screw (22) is rotatably connected to the bottom surface of the cover plate (21), and the screw (22) is threadedly connected to the inner wall of the clamping groove (20).

7. A hydraulic shaping machine for a mine car according to claim 1, characterized in that: Limit blocks (15) are fixedly connected to both sides of the inner wall of the slide groove (9), and limit grooves (16) corresponding to the positions of the two limit blocks (15) are respectively provided on both sides of the moving block (10).

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